src/common/sizer.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        sizer.cpp
   3 // Purpose:     provide new wxSizer class for layout
   4 // Author:      Robert Roebling and Robin Dunn
   5 // Modified by:
   6 // Created:
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Robin Dunn, Dirk Holtwick and Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "sizer.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #include "wx/sizer.h"
  24 #include "wx/utils.h"
  25 #include "wx/statbox.h"
  26 #include "wx/notebook.h"
  27
  28 //---------------------------------------------------------------------------
  29
  30 IMPLEMENT_ABSTRACT_CLASS(wxSizerItem, wxObject);
  31 IMPLEMENT_ABSTRACT_CLASS(wxSizer, wxObject);
  32 IMPLEMENT_ABSTRACT_CLASS(wxGridSizer, wxSizer);
  33 IMPLEMENT_ABSTRACT_CLASS(wxFlexGridSizer, wxGridSizer);
  34 IMPLEMENT_ABSTRACT_CLASS(wxBoxSizer, wxSizer);
  35 IMPLEMENT_ABSTRACT_CLASS(wxStaticBoxSizer, wxBoxSizer);
  36 #if wxUSE_NOTEBOOK
  37 IMPLEMENT_ABSTRACT_CLASS(wxNotebookSizer, wxSizer);
  38 #endif
  39
  40 //---------------------------------------------------------------------------
  41 // wxSizerItem
  42 //---------------------------------------------------------------------------
  43
  44 wxSizerItem::wxSizerItem( int width, int height, int option, int flag, int border, wxObject* userData )
  45 {
  46     m_window = (wxWindow *) NULL;
  47     m_sizer = (wxSizer *) NULL;
  48     m_option = option;
  49     m_border = border;
  50     m_flag = flag;
  51     m_userData = userData;
  52
  53     // minimal size is the initial size
  54     m_minSize.x = width;
  55     m_minSize.y = height;
  56
  57     SetRatio(width, height);
  58
  59     // size is set directly
  60     m_size = m_minSize;
  61 }
  62
  63 wxSizerItem::wxSizerItem( wxWindow *window, int option, int flag, int border, wxObject* userData )
  64 {
  65     m_window = window;
  66     m_sizer = (wxSizer *) NULL;
  67     m_option = option;
  68     m_border = border;
  69     m_flag = flag;
  70     m_userData = userData;
  71
  72     // minimal size is the initial size
  73     m_minSize = window->GetSize();
  74
  75     // aspect ratio calculated from initial size
  76     SetRatio(m_minSize);
  77
  78     // size is calculated later
  79     // m_size = ...
  80 }
  81
  82 wxSizerItem::wxSizerItem( wxSizer *sizer, int option, int flag, int border, wxObject* userData )
  83 {
  84     m_window = (wxWindow *) NULL;
  85     m_sizer = sizer;
  86     m_option = option;
  87     m_border = border;
  88     m_flag = flag;
  89     m_userData = userData;
  90
  91     // minimal size is calculated later
  92     // m_minSize = ...
  93     m_ratio = 0;
  94
  95     // size is calculated later
  96     // m_size = ...
  97 }
  98
  99 wxSizerItem::~wxSizerItem()
 100 {
 101     if (m_userData)
 102         delete m_userData;
 103     if (m_sizer)
 104         delete m_sizer;
 105 }
 106
 107
 108 wxSize wxSizerItem::GetSize()
 109 {
 110     wxSize ret;
 111     if (IsSizer())
 112         ret = m_sizer->GetSize();
 113     else
 114     if (IsWindow())
 115         ret = m_window->GetSize();
 116     else ret = m_size;
 117
 118     if (m_flag & wxWEST)
 119         ret.x += m_border;
 120     if (m_flag & wxEAST)
 121         ret.x += m_border;
 122     if (m_flag & wxNORTH)
 123         ret.y += m_border;
 124     if (m_flag & wxSOUTH)
 125         ret.y += m_border;
 126
 127     return ret;
 128 }
 129
 130 wxSize wxSizerItem::CalcMin()
 131 {
 132     wxSize ret;
 133     if (IsSizer())
 134     {
 135         ret = m_sizer->GetMinSize();
 136         // if we have to preserve aspect ratio _AND_ this is
 137         // the first-time calculation, consider ret to be initial size
 138         if ((m_flag & wxSHAPED) && !m_ratio) SetRatio(ret);
 139     }
 140
 141 /*
 142     The minimum size of a window should be the
 143     initial size, as saved in m_minSize, not the
 144     current size.
 145
 146     else
 147     if (IsWindow())
 148         ret = m_window->GetSize();
 149 */
 150     else ret = m_minSize;
 151
 152     if (m_flag & wxWEST)
 153         ret.x += m_border;
 154     if (m_flag & wxEAST)
 155         ret.x += m_border;
 156     if (m_flag & wxNORTH)
 157         ret.y += m_border;
 158     if (m_flag & wxSOUTH)
 159         ret.y += m_border;
 160
 161     return ret;
 162 }
 163
 164 void wxSizerItem::SetDimension( wxPoint pos, wxSize size )
 165 {
 166     if (m_flag & wxSHAPED)
 167     {
 168         // adjust aspect ratio
 169         int rwidth = (int) (size.y * m_ratio);
 170         if (rwidth > size.x)
 171         {
 172             // fit horizontally
 173             int rheight = (int) (size.x / m_ratio);
 174             // add vertical space
 175             if (m_flag & wxALIGN_CENTER_VERTICAL)
 176                 pos.y += (size.y - rheight) / 2;
 177             else if (m_flag & wxALIGN_BOTTOM)
 178                 pos.y += (size.y - rheight);
 179             // use reduced dimensions
 180             size.y =rheight;
 181         }
 182         else if (rwidth < size.x)
 183         {
 184             // add horizontal space
 185             if (m_flag & wxALIGN_CENTER_HORIZONTAL)
 186                 pos.x += (size.x - rwidth) / 2;
 187             else if (m_flag & wxALIGN_RIGHT)
 188                 pos.x += (size.x - rwidth);
 189             size.x = rwidth;
 190         }
 191     }
 192
 193     // This is what GetPosition() returns. Since we calculate
 194     // borders afterwards, GetPosition() will be the left/top
 195     // corner of the surrounding border.
 196     m_pos = pos;
 197
 198     if (m_flag & wxWEST)
 199     {
 200         pos.x += m_border;
 201         size.x -= m_border;
 202     }
 203     if (m_flag & wxEAST)
 204     {
 205         size.x -= m_border;
 206     }
 207     if (m_flag & wxNORTH)
 208     {
 209         pos.y += m_border;
 210         size.y -= m_border;
 211     }
 212     if (m_flag & wxSOUTH)
 213     {
 214         size.y -= m_border;
 215     }
 216
 217     if (IsSizer())
 218         m_sizer->SetDimension( pos.x, pos.y, size.x, size.y );
 219
 220     if (IsWindow())
 221         m_window->SetSize( pos.x, pos.y, size.x, size.y, wxSIZE_ALLOW_MINUS_ONE );
 222
 223     m_size = size;
 224 }
 225
 226 bool wxSizerItem::IsWindow()
 227 {
 228     return (m_window != NULL);
 229 }
 230
 231 bool wxSizerItem::IsSizer()
 232 {
 233     return (m_sizer != NULL);
 234 }
 235
 236 bool wxSizerItem::IsSpacer()
 237 {
 238     return (m_window == NULL) && (m_sizer == NULL);
 239 }
 240
 241 //---------------------------------------------------------------------------
 242 // wxSizer
 243 //---------------------------------------------------------------------------
 244
 245 wxSizer::wxSizer()
 246 {
 247     m_children.DeleteContents( TRUE );
 248     m_minSize.x = 0;
 249     m_minSize.y = 0;
 250 }
 251
 252 wxSizer::~wxSizer()
 253 {
 254 }
 255
 256 void wxSizer::Add( wxWindow *window, int option, int flag, int border, wxObject* userData )
 257 {
 258     m_children.Append( new wxSizerItem( window, option, flag, border, userData ) );
 259 }
 260
 261 void wxSizer::Add( wxSizer *sizer, int option, int flag, int border, wxObject* userData )
 262 {
 263     m_children.Append( new wxSizerItem( sizer, option, flag, border, userData ) );
 264 }
 265
 266 void wxSizer::Add( int width, int height, int option, int flag, int border, wxObject* userData )
 267 {
 268     m_children.Append( new wxSizerItem( width, height, option, flag, border, userData ) );
 269 }
 270
 271 void wxSizer::Prepend( wxWindow *window, int option, int flag, int border, wxObject* userData )
 272 {
 273     m_children.Insert( new wxSizerItem( window, option, flag, border, userData ) );
 274 }
 275
 276 void wxSizer::Prepend( wxSizer *sizer, int option, int flag, int border, wxObject* userData )
 277 {
 278     m_children.Insert( new wxSizerItem( sizer, option, flag, border, userData ) );
 279 }
 280
 281 void wxSizer::Prepend( int width, int height, int option, int flag, int border, wxObject* userData )
 282 {
 283     m_children.Insert( new wxSizerItem( width, height, option, flag, border, userData ) );
 284 }
 285
 286 void wxSizer::Insert( int before, wxWindow *window, int option, int flag, int border, wxObject* userData )
 287 {
 288     m_children.Insert( before, new wxSizerItem( window, option, flag, border, userData ) );
 289 }
 290
 291 void wxSizer::Insert( int before, wxSizer *sizer, int option, int flag, int border, wxObject* userData )
 292 {
 293     m_children.Insert( before, new wxSizerItem( sizer, option, flag, border, userData ) );
 294 }
 295
 296 void wxSizer::Insert( int before, int width, int height, int option, int flag, int border, wxObject* userData )
 297 {
 298     m_children.Insert( before, new wxSizerItem( width, height, option, flag, border, userData ) );
 299 }
 300
 301 bool wxSizer::Remove( wxWindow *window )
 302 {
 303     wxASSERT( window );
 304
 305     wxNode *node = m_children.First();
 306     while (node)
 307     {
 308         wxSizerItem *item = (wxSizerItem*)node->Data();
 309         if (item->GetWindow() == window)
 310         {
 311             m_children.DeleteNode( node );
 312             return TRUE;
 313         }
 314         node = node->Next();
 315     }
 316
 317     return FALSE;
 318 }
 319
 320 bool wxSizer::Remove( wxSizer *sizer )
 321 {
 322     wxASSERT( sizer );
 323
 324     wxNode *node = m_children.First();
 325     while (node)
 326     {
 327         wxSizerItem *item = (wxSizerItem*)node->Data();
 328         if (item->GetSizer() == sizer)
 329         {
 330             m_children.DeleteNode( node );
 331             return TRUE;
 332         }
 333         node = node->Next();
 334     }
 335
 336     return FALSE;
 337 }
 338
 339 bool wxSizer::Remove( int pos )
 340 {
 341     wxNode *node = m_children.Nth( pos );
 342     if (!node) return FALSE;
 343
 344     m_children.DeleteNode( node );
 345
 346     return TRUE;
 347 }
 348
 349 void wxSizer::Fit( wxWindow *window )
 350 {
 351     window->SetSize( GetMinWindowSize( window ) );
 352 }
 353
 354 void wxSizer::Layout()
 355 {
 356     CalcMin();
 357     RecalcSizes();
 358 }
 359
 360 void wxSizer::SetSizeHints( wxWindow *window )
 361 {
 362     wxSize size( GetMinWindowSize( window ) );
 363     window->SetSizeHints( size.x, size.y );
 364 }
 365
 366 wxSize wxSizer::GetMinWindowSize( wxWindow *window )
 367 {
 368     wxSize minSize( GetMinSize() );
 369     wxSize size( window->GetSize() );
 370     wxSize client_size( window->GetClientSize() );
 371     return wxSize( minSize.x+size.x-client_size.x,
 372                    minSize.y+size.y-client_size.y );
 373 }
 374
 375 void wxSizer::SetDimension( int x, int y, int width, int height )
 376 {
 377     m_position.x = x;
 378     m_position.y = y;
 379     m_size.x = width;
 380     m_size.y = height;
 381     CalcMin();
 382     RecalcSizes();
 383 }
 384
 385 wxSize wxSizer::GetMinSize()
 386 {
 387     wxSize ret( CalcMin() );
 388     if (ret.x < m_minSize.x) ret.x = m_minSize.x;
 389     if (ret.y < m_minSize.y) ret.y = m_minSize.y;
 390     return ret;
 391 }
 392
 393 void wxSizer::DoSetMinSize( int width, int height )
 394 {
 395     m_minSize.x = width;
 396     m_minSize.y = height;
 397 }
 398
 399 bool wxSizer::DoSetItemMinSize( wxWindow *window, int width, int height )
 400 {
 401     wxASSERT( window );
 402
 403     wxNode *node = m_children.First();
 404     while (node)
 405     {
 406         wxSizerItem *item = (wxSizerItem*)node->Data();
 407         if (item->GetWindow() == window)
 408         {
 409             item->SetInitSize( width, height );
 410             return TRUE;
 411         }
 412         node = node->Next();
 413     }
 414
 415     node = m_children.First();
 416     while (node)
 417     {
 418         wxSizerItem *item = (wxSizerItem*)node->Data();
 419         if (item->GetSizer())
 420         {
 421             /* It's a sizer, so lets search recursively. */
 422             if (item->GetSizer()->DoSetItemMinSize( window, width, height ))
 423             {
 424                 /* A child sizer found the requested windw, exit. */
 425                 return TRUE;
 426             }
 427         }
 428         node = node->Next();
 429     }
 430
 431     return FALSE;
 432 }
 433
 434 bool wxSizer::DoSetItemMinSize( wxSizer *sizer, int width, int height )
 435 {
 436     wxASSERT( sizer );
 437
 438     wxNode *node = m_children.First();
 439     while (node)
 440     {
 441         wxSizerItem *item = (wxSizerItem*)node->Data();
 442         if (item->GetSizer() == sizer)
 443         {
 444             item->GetSizer()->DoSetMinSize( width, height );
 445             return TRUE;
 446         }
 447         node = node->Next();
 448     }
 449
 450     node = m_children.First();
 451     while (node)
 452     {
 453         wxSizerItem *item = (wxSizerItem*)node->Data();
 454         if (item->GetSizer())
 455         {
 456             /* It's a sizer, so lets search recursively. */
 457             if (item->GetSizer()->DoSetItemMinSize( sizer, width, height ))
 458             {
 459                 /* A child sizer found the requested windw, exit. */
 460                 return TRUE;
 461             }
 462         }
 463         node = node->Next();
 464     }
 465
 466     return FALSE;
 467 }
 468
 469 bool wxSizer::DoSetItemMinSize( int pos, int width, int height )
 470 {
 471     wxNode *node = m_children.Nth( pos );
 472     if (!node) return FALSE;
 473
 474     wxSizerItem *item = (wxSizerItem*) node->Data();
 475     if (item->GetSizer())
 476     {
 477         /* Sizers contains the minimal size in them, if not calculated ... */
 478         item->GetSizer()->DoSetMinSize( width, height );
 479     }
 480     else
 481     {
 482         /* ... whereas the minimal size of spacers and windows in stored
 483            in the item */
 484         item->SetInitSize( width, height );
 485     }
 486
 487     return TRUE;
 488 }
 489
 490 //---------------------------------------------------------------------------
 491 // wxGridSizer
 492 //---------------------------------------------------------------------------
 493
 494 wxGridSizer::wxGridSizer( int rows, int cols, int vgap, int hgap )
 495 {
 496     m_rows = rows;
 497     m_cols = cols;
 498     m_vgap = vgap;
 499     m_hgap = hgap;
 500 }
 501
 502 wxGridSizer::wxGridSizer( int cols, int vgap, int hgap )
 503 {
 504     m_rows = 0;
 505     m_cols = cols;
 506     m_vgap = vgap;
 507     m_hgap = hgap;
 508 }
 509
 510 void wxGridSizer::RecalcSizes()
 511 {
 512     if (m_children.GetCount() == 0)
 513         return;
 514
 515     int nitems = m_children.GetCount();
 516     int nrows = m_rows;
 517     int ncols = m_cols;
 518
 519     if (ncols > 0)
 520         nrows = (nitems + ncols-1) / ncols;
 521     else
 522         ncols = (nitems + nrows-1) / nrows;
 523
 524     wxSize sz( GetSize() );
 525     wxPoint pt( GetPosition() );
 526
 527     int w = (sz.x - (ncols - 1) * m_hgap) / ncols;
 528     int h = (sz.y - (nrows - 1) * m_vgap) / nrows;
 529
 530     int x = pt.x;
 531     for (int c = 0; c < ncols; c++)
 532     {
 533         int y = pt.y;
 534         for (int r = 0; r < nrows; r++)
 535         {
 536             int i = r * ncols + c;
 537             if (i < nitems)
 538             {
 539                 wxNode *node = m_children.Nth( i );
 540                 wxASSERT( node );
 541
 542                 SetItemBounds( (wxSizerItem*) node->Data(), x, y, w, h);
 543             }
 544             y = y + h + m_vgap;
 545         }
 546         x = x + w + m_hgap;
 547     }
 548 }
 549
 550 wxSize wxGridSizer::CalcMin()
 551 {
 552     if (m_children.GetCount() == 0)
 553         return wxSize(10,10);
 554
 555     int nitems = m_children.GetCount();
 556     int nrows = m_rows;
 557     int ncols = m_cols;
 558
 559     if (ncols > 0)
 560         nrows = (nitems + ncols-1) / ncols;
 561     else
 562         ncols = (nitems + nrows-1) / nrows;
 563
 564     /* Find the max width and height for any component */
 565     int w = 0;
 566     int h = 0;
 567
 568     wxNode *node = m_children.First();
 569     while (node)
 570     {
 571         wxSizerItem *item = (wxSizerItem*)node->Data();
 572         wxSize sz( item->CalcMin() );
 573         w = wxMax( w, sz.x );
 574         h = wxMax( h, sz.y );
 575
 576         node = node->Next();
 577     }
 578
 579     return wxSize(ncols * w + (ncols-1) * m_hgap,
 580                   nrows * h + (nrows-1) * m_vgap);
 581 }
 582
 583 void wxGridSizer::SetItemBounds( wxSizerItem *item, int x, int y, int w, int h )
 584 {
 585     wxPoint pt( x,y );
 586     wxSize sz( item->CalcMin() );
 587     int flag = item->GetFlag();
 588
 589     if ((flag & wxEXPAND) || (flag & wxSHAPED))
 590     {
 591        sz = wxSize(w, h);
 592     }
 593     else
 594     {
 595         if (flag & wxALIGN_CENTER_HORIZONTAL)
 596         {
 597             pt.x = x + (w - sz.x) / 2;
 598         }
 599         else if (flag & wxALIGN_RIGHT)
 600         {
 601             pt.x = x + (w - sz.x);
 602         }
 603
 604         if (flag & wxALIGN_CENTER_VERTICAL)
 605         {
 606             pt.y = y + (h - sz.y) / 2;
 607         }
 608         else if (flag & wxALIGN_BOTTOM)
 609         {
 610             pt.y = y + (h - sz.y);
 611         }
 612     }
 613
 614     item->SetDimension(pt, sz);
 615 }
 616
 617 //---------------------------------------------------------------------------
 618 // wxFlexGridSizer
 619 //---------------------------------------------------------------------------
 620
 621 wxFlexGridSizer::wxFlexGridSizer( int rows, int cols, int vgap, int hgap )
 622    : wxGridSizer( rows, cols, vgap, hgap )
 623 {
 624     m_rowHeights = (int*) NULL;
 625     m_colWidths = (int*) NULL;
 626 }
 627
 628 wxFlexGridSizer::wxFlexGridSizer( int cols, int vgap, int hgap )
 629    : wxGridSizer( cols, vgap, hgap )
 630 {
 631     m_rowHeights = (int*) NULL;
 632     m_colWidths = (int*) NULL;
 633 }
 634
 635 wxFlexGridSizer::~wxFlexGridSizer()
 636 {
 637     if (m_rowHeights)
 638         delete[] m_rowHeights;
 639     if (m_colWidths)
 640         delete[] m_colWidths;
 641 }
 642
 643 void wxFlexGridSizer::CreateArrays()
 644 {
 645     if (m_rowHeights)
 646         delete[] m_rowHeights;
 647     if (m_colWidths)
 648         delete[] m_colWidths;
 649
 650     if (m_children.GetCount() == 0)
 651         return;
 652
 653     int nitems = m_children.GetCount();
 654     int nrows = m_rows;
 655     int ncols = m_cols;
 656
 657     if (ncols > 0)
 658         nrows = (nitems + ncols-1) / ncols;
 659     else
 660         ncols = (nitems + nrows-1) / nrows;
 661
 662     m_rowHeights = new int[nrows];
 663     m_colWidths = new int[ncols];
 664
 665     for (int col = 0; col < ncols; col++)
 666         m_colWidths[ col ] = 0;
 667     for (int row = 0; row < nrows; row++)
 668         m_rowHeights[ row ] = 0;
 669 }
 670
 671 void wxFlexGridSizer::RecalcSizes()
 672 {
 673     if (m_children.GetCount() == 0)
 674         return;
 675
 676     int nitems = m_children.GetCount();
 677     int nrows = m_rows;
 678     int ncols = m_cols;
 679
 680     if (ncols > 0)
 681         nrows = (nitems + ncols-1) / ncols;
 682     else
 683         ncols = (nitems + nrows-1) / nrows;
 684
 685     wxSize sz( GetSize() );
 686     wxSize minsz( CalcMin() );
 687     wxPoint pt( GetPosition() );
 688     int    delta;
 689     size_t idx;
 690
 691     if ((m_growableRows.GetCount() > 0) && (sz.y > minsz.y))
 692     {
 693         delta = (sz.y - minsz.y) / m_growableRows.GetCount();
 694         for (idx = 0; idx < m_growableRows.GetCount(); idx++)
 695             m_rowHeights[ m_growableRows[idx] ] += delta;
 696     }
 697
 698     if ((m_growableCols.GetCount() > 0) && (sz.x > minsz.x))
 699     {
 700         delta = (sz.x - minsz.x) / m_growableCols.GetCount();
 701         for (idx = 0; idx < m_growableCols.GetCount(); idx++)
 702             m_colWidths[ m_growableCols[idx] ] += delta;
 703     }
 704
 705     sz = wxSize( pt.x + sz.x, pt.y + sz.y );
 706
 707     int x = pt.x;
 708     for (int c = 0; c < ncols; c++)
 709     {
 710         int y = pt.y;
 711         for (int r = 0; r < nrows; r++)
 712         {
 713             int i = r * ncols + c;
 714             if (i < nitems)
 715             {
 716                 wxNode *node = m_children.Nth( i );
 717                 wxASSERT( node );
 718
 719                 int w = wxMax( 0, wxMin( m_colWidths[c], sz.x - x ) );
 720                 int h = wxMax( 0, wxMin( m_rowHeights[r], sz.y - y ) );
 721
 722                 SetItemBounds( (wxSizerItem*) node->Data(), x, y, w, h);
 723             }
 724             y = y + m_rowHeights[r] + m_vgap;
 725         }
 726         x = x + m_colWidths[c] + m_hgap;
 727     }
 728 }
 729
 730 wxSize wxFlexGridSizer::CalcMin()
 731 {
 732     if (m_children.GetCount() == 0)
 733         return wxSize(10,10);
 734
 735     int nitems = m_children.GetCount();
 736     int nrows = m_rows;
 737     int ncols = m_cols;
 738
 739     if (ncols > 0)
 740         nrows = (nitems + ncols-1) / ncols;
 741     else
 742         ncols = (nitems + nrows-1) / nrows;
 743
 744     CreateArrays();
 745
 746     int col;
 747     int row;
 748
 749     int i = 0;
 750     wxNode *node = m_children.First();
 751     while (node)
 752     {
 753         wxSizerItem *item = (wxSizerItem*)node->Data();
 754         wxSize sz( item->CalcMin() );
 755         row = i / ncols;
 756         col = i % ncols;
 757         m_rowHeights[ row ] = wxMax( sz.y, m_rowHeights[ row ] );
 758         m_colWidths[ col ] = wxMax( sz.x, m_colWidths[ col ] );
 759
 760         node = node->Next();
 761         i++;
 762     }
 763
 764     int width = 0;
 765     for (col = 0; col < ncols; col++)
 766         width += m_colWidths[ col ];
 767
 768     int height = 0;
 769     for (row = 0; row < nrows; row++)
 770         height += m_rowHeights[ row ];
 771
 772     return wxSize( width +  (ncols-1) * m_hgap,
 773                    height + (nrows-1) * m_vgap);
 774 }
 775
 776 void wxFlexGridSizer::AddGrowableRow( size_t idx )
 777 {
 778     m_growableRows.Add( idx );
 779 }
 780
 781 void wxFlexGridSizer::RemoveGrowableRow( size_t WXUNUSED(idx) )
 782 {
 783 }
 784
 785 void wxFlexGridSizer::AddGrowableCol( size_t idx )
 786 {
 787     m_growableCols.Add( idx );
 788 }
 789
 790 void wxFlexGridSizer::RemoveGrowableCol( size_t WXUNUSED(idx) )
 791 {
 792 }
 793
 794 //---------------------------------------------------------------------------
 795 // wxBoxSizer
 796 //---------------------------------------------------------------------------
 797
 798 wxBoxSizer::wxBoxSizer( int orient )
 799 {
 800     m_orient = orient;
 801 }
 802
 803 void wxBoxSizer::RecalcSizes()
 804 {
 805     if (m_children.GetCount() == 0)
 806         return;
 807
 808     int delta = 0;
 809     int extra = 0;
 810     if (m_stretchable)
 811     {
 812         if (m_orient == wxHORIZONTAL)
 813         {
 814             delta = (m_size.x - m_fixedWidth) / m_stretchable;
 815             extra = (m_size.x - m_fixedWidth) % m_stretchable;
 816         }
 817         else
 818         {
 819             delta = (m_size.y - m_fixedHeight) / m_stretchable;
 820             extra = (m_size.y - m_fixedHeight) % m_stretchable;
 821         }
 822     }
 823
 824     wxPoint pt( m_position );
 825
 826     wxNode *node = m_children.GetFirst();
 827     while (node)
 828     {
 829         wxSizerItem *item = (wxSizerItem*) node->Data();
 830
 831         int weight = 1;
 832         if (item->GetOption())
 833             weight = item->GetOption();
 834
 835         wxSize size( item->CalcMin() );
 836
 837         if (m_orient == wxVERTICAL)
 838         {
 839             wxCoord height = size.y;
 840             if (item->GetOption())
 841             {
 842                 height = (delta * weight) + extra;
 843                 extra = 0; // only the first item will get the remainder as extra size
 844             }
 845
 846             wxPoint child_pos( pt );
 847             wxSize  child_size( wxSize( size.x, height) );
 848
 849             if (item->GetFlag() & (wxEXPAND | wxSHAPED))
 850                 child_size.x = m_size.x;
 851             else if (item->GetFlag() & wxALIGN_RIGHT)
 852                 child_pos.x += m_size.x - size.x;
 853             else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_HORIZONTAL))
 854             // XXX wxCENTER is added for backward compatibility;
 855             //     wxALIGN_CENTER should be used in new code
 856                 child_pos.x += (m_size.x - size.x) / 2;
 857
 858             item->SetDimension( child_pos, child_size );
 859
 860             pt.y += height;
 861         }
 862         else
 863         {
 864             wxCoord width = size.x;
 865             if (item->GetOption())
 866             {
 867                 width = (delta * weight) + extra;
 868                 extra = 0; // only the first item will get the remainder as extra size
 869             }
 870
 871             wxPoint child_pos( pt );
 872             wxSize  child_size( wxSize(width, size.y) );
 873
 874             if (item->GetFlag() & (wxEXPAND | wxSHAPED))
 875                 child_size.y = m_size.y;
 876             else if (item->GetFlag() & wxALIGN_BOTTOM)
 877                 child_pos.y += m_size.y - size.y;
 878             else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_VERTICAL))
 879             // XXX wxCENTER is added for backward compatibility;
 880             //     wxALIGN_CENTER should be used in new code
 881                 child_pos.y += (m_size.y - size.y) / 2;
 882
 883             item->SetDimension( child_pos, child_size );
 884
 885             pt.x += width;
 886         }
 887
 888         node = node->Next();
 889     }
 890 }
 891
 892 wxSize wxBoxSizer::CalcMin()
 893 {
 894     if (m_children.GetCount() == 0)
 895         return wxSize(10,10);
 896
 897     m_stretchable = 0;
 898     m_minWidth = 0;
 899     m_minHeight = 0;
 900     m_fixedWidth = 0;
 901     m_fixedHeight = 0;
 902
 903     wxNode *node = m_children.GetFirst();
 904     while (node)
 905     {
 906         wxSizerItem *item = (wxSizerItem*) node->Data();
 907
 908         m_stretchable += item->GetOption();
 909
 910         wxSize size( item->CalcMin() );
 911
 912         if (m_orient == wxHORIZONTAL)
 913         {
 914             m_minWidth += size.x;
 915             m_minHeight = wxMax( m_minHeight, size.y );
 916         }
 917         else
 918         {
 919             m_minHeight += size.y;
 920             m_minWidth = wxMax( m_minWidth, size.x );
 921         }
 922
 923         if (item->GetOption() == 0)
 924         {
 925             if (m_orient == wxVERTICAL)
 926             {
 927                 m_fixedHeight += size.y;
 928                 m_fixedWidth = wxMax( m_fixedWidth, size.x );
 929             }
 930             else
 931             {
 932                 m_fixedWidth += size.x;
 933                 m_fixedHeight = wxMax( m_fixedHeight, size.y );
 934             }
 935         }
 936
 937         node = node->Next();
 938     }
 939
 940     return wxSize( m_minWidth, m_minHeight );
 941 }
 942
 943 //---------------------------------------------------------------------------
 944 // wxStaticBoxSizer
 945 //---------------------------------------------------------------------------
 946
 947 wxStaticBoxSizer::wxStaticBoxSizer( wxStaticBox *box, int orient )
 948   : wxBoxSizer( orient )
 949 {
 950     wxASSERT_MSG( box, wxT("wxStaticBoxSizer needs a static box") );
 951
 952     m_staticBox = box;
 953 }
 954
 955 void wxStaticBoxSizer::RecalcSizes()
 956 {
 957     // this will have to be done platform by platform
 958     // as there is no way to guess the thickness of
 959     // a wxStaticBox border
 960     int top_border = 15;
 961     if (m_staticBox->GetLabel().IsEmpty()) top_border = 5;
 962     int other_border = 5;
 963
 964     m_staticBox->SetSize( m_position.x, m_position.y, m_size.x, m_size.y );
 965
 966     wxPoint old_pos( m_position );
 967     m_position.x += other_border;
 968     m_position.y += top_border;
 969     wxSize old_size( m_size );
 970     m_size.x -= 2*other_border;
 971     m_size.y -= top_border + other_border;
 972
 973     wxBoxSizer::RecalcSizes();
 974
 975     m_position = old_pos;
 976     m_size = old_size;
 977 }
 978
 979 wxSize wxStaticBoxSizer::CalcMin()
 980 {
 981     // This will have to be done platform by platform
 982     // as there is no way to guess the thickness of
 983     // a wxStaticBox border.
 984
 985     int top_border = 15;
 986     if (m_staticBox->GetLabel().IsEmpty()) top_border = 5;
 987     int other_border = 5;
 988
 989     wxSize ret( wxBoxSizer::CalcMin() );
 990     ret.x += 2*other_border;
 991     ret.y += other_border + top_border;
 992
 993     return ret;
 994 }
 995
 996 //---------------------------------------------------------------------------
 997 // wxNotebookSizer
 998 //---------------------------------------------------------------------------
 999
1000 #if wxUSE_NOTEBOOK
1001
1002 wxNotebookSizer::wxNotebookSizer( wxNotebook *nb )
1003 {
1004     wxASSERT_MSG( nb, wxT("wxNotebookSizer needs a notebook") );
1005
1006     m_notebook = nb;
1007 }
1008
1009 void wxNotebookSizer::RecalcSizes()
1010 {
1011     m_notebook->SetSize( m_position.x, m_position.y, m_size.x, m_size.y );
1012 }
1013
1014 wxSize wxNotebookSizer::CalcMin()
1015 {
1016     // This will have to be done platform by platform
1017     // as there is no way to guess the thickness of
1018     // the wxNotebook tabs and border.
1019
1020     int borderX = 5;
1021     int borderY = 5;
1022     if ((m_notebook->HasFlag(wxNB_RIGHT)) ||
1023         (m_notebook->HasFlag(wxNB_LEFT)))
1024     {
1025         borderX += 90; // improvements later..
1026     }
1027     else
1028     {
1029         borderY += 40; // improvements later..
1030     }
1031
1032     if (m_notebook->GetChildren().GetCount() == 0)
1033         return wxSize(borderX + 10, borderY + 10);
1034
1035     int maxX = 0;
1036     int maxY = 0;
1037
1038     wxWindowList::Node *node = m_notebook->GetChildren().GetFirst();
1039     while (node)
1040     {
1041         wxWindow *item = node->GetData();
1042         wxSizer *itemsizer = item->GetSizer();
1043
1044         if (itemsizer)
1045         {
1046             wxSize subsize( itemsizer->CalcMin() );
1047
1048             if (subsize.x > maxX) maxX = subsize.x;
1049             if (subsize.y > maxY) maxY = subsize.y;
1050         }
1051
1052         node = node->GetNext();
1053     }
1054
1055     return wxSize( borderX + maxX, borderY + maxY );
1056 }
1057
1058 #endif // wxUSE_NOTEBOOK